Support Time.now: Join our Premium Plan for an ad-free experience! Support Us: Go Premium Ad-Free!

Weather in Rancho Cucamonga, United States 🇺🇸

Current Weather in Rancho Cucamonga

Sunny
17°C
Feels like 18°C. Sunny.
🌬️ 4 km/h ESE
💧 76% Humidity
🧭 1013 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 0.8
🌡️ Dew Point: 13°C
🌅 Sunrise: 06:26 AM
🌇 Sunset: 07:12 PM
Map Overlays:

The current temperature in Rancho Cucamonga is 17°C, sunny, feeling like 18°C. Expect 76% humidity and winds of about 4 km/h, and the UV index is 1 (low). The next few days in Rancho Cucamonga look set for about 14°C up to 32°C.

Hourly Forecast for Rancho Cucamonga

09:00
Sunny
20°
5%
10:00
Sunny
22°
2%
11:00
Sunny
27°
1%
12:00
Sunny
30°
1%
13:00
Sunny
32°
0%
14:00
Sunny
28°
0%
15:00
Sunny
28°
0%
16:00
Sunny
28°
0%
17:00
Sunny
27°
0%
18:00
Sunny
26°
0%
19:00
Sunny
24°
1%
20:00
Clear
23°
1%
21:00
Clear
22°
1%
22:00
Clear
22°
1%
23:00
Clear
21°
1%
00:00
Clear
21°
2%
01:00
Clear
20°
2%
02:00
Clear
20°
2%
03:00
Clear
20°
2%
04:00
Clear
20°
2%
05:00
Clear
20°
2%
06:00
Clear
20°
2%
07:00
Sunny
20°
2%
08:00
Sunny
21°
1%

14-Day Forecast for Rancho Cucamonga

Fri, Sep 04
Sunny Sunny
32° / 14°
Sat, Sep 05
Sunny Sunny
30° / 20°
Sun, Sep 06
Sunny Sunny
29° / 22°
Mon, Sep 07
Sunny Sunny
31° / 22°
Tue, Sep 08
Sunny Sunny
32° / 21°
Wed, Sep 09
Cloudy Cloudy
33° / 25°
Thu, Sep 10
Sunny Sunny
32° / 25°
Fri, Sep 11
Sunny Sunny
30° / 22°
Sat, Sep 12
Sunny Sunny
29° / 20°
Sun, Sep 13
Sunny Sunny
33° / 21°
Mon, Sep 14
Sunny Sunny
34° / 24°
Tue, Sep 15
Sunny Sunny
34° / 25°
Wed, Sep 16
Sunny Sunny
26° / 18°
Thu, Sep 17
Sunny Sunny
28° / 17°

Additional Forecasts for Rancho Cucamonga

Air Quality

💨 US EPA Index 2 (Moderate)
CO (Carbon Monoxide) 194.0 μg/m³
O₃ (Ozone) 52.0 μg/m³
NO₂ (Nitrogen Dioxide) 14.4 μg/m³
SO₂ (Sulphur Dioxide) 2.6 μg/m³
PM2.5 (Fine particles) 24.4 μg/m³
PM10 (Coarse particles) 29.2 μg/m³

Historical Weather

Weather Forecasts for Other Cities in United States

Browse Weather in United States by cities in alphabetical order:

A B C D E F G H I J K L M N O P Q R S T V W

Weather in United States ›

Best Time to Be Outside in Rancho Cucamonga Today

The most comfortable window in Rancho Cucamonga today looks like 17:00 to 20:00, when it is around 26°C. It should stay dry through that window. No significant rain is expected in the next several hours.

Frequently Asked Questions about Weather in Rancho Cucamonga

What is the temperature in Rancho Cucamonga right now?

The current temperature in Rancho Cucamonga is 17°C (63°F), sunny (feels like 18°C).

What's the weather like in Rancho Cucamonga right now?

Right now Rancho Cucamonga has Sunny, humidity 76%, wind 4 km/h ESE.

What is today's forecast for Rancho Cucamonga?

Today in Rancho Cucamonga: high 32°C, low 14°C, sunny. Chance of rain: 2%.

What is the 7-day weather forecast for Rancho Cucamonga?

Daily highs and lows for Rancho Cucamonga:

  • 2026-09-04: 32°C / 14°C
  • 2026-09-05: 30°C / 20°C
  • 2026-09-06: 29°C / 22°C
  • 2026-09-07: 31°C / 22°C
  • 2026-09-08: 32°C / 21°C
  • 2026-09-09: 33°C / 25°C
  • 2026-09-10: 32°C / 25°C
Is it going to rain in Rancho Cucamonga today?

There is a 2% chance of rain in Rancho Cucamonga today.

What is the wind speed in Rancho Cucamonga right now?

Wind in Rancho Cucamonga is currently 4 km/h (2 mph) from the ESE.

What is the UV index in Rancho Cucamonga right now?

The UV index in Rancho Cucamonga is currently 0.8 (low). Sun protection is recommended when the index is 3 or higher.

Weather forecasts for other major cities in 🇺🇸 United States: New York City · Los Angeles · Brooklyn · Chicago · Houston · Queens · Phoenix · Philadelphia · Manhattan · San Antonio · San Diego · The Bronx · Dallas · Jacksonville · Austin · Fort Worth · Columbus · Indianapolis · Charlotte · San Francisco · Seattle · Denver · Washington, D.C. · Washington · Nashville · El Paso · Oklahoma City · Detroit · Boston · Portland · New South Memphis · Memphis · Las Vegas · Milwaukee · Baltimore · South Boston · Albuquerque · Tucson · Fresno · Sacramento · Omaha · Kansas City · Long Beach · Mesa · Staten Island · Atlanta · Colorado Springs · Virginia Beach · Raleigh · Miami